منابع مشابه
Lysosomes and melanin granules of the retinal pigment epithelium in a mouse model of the Chediak-Higashi syndrome.
The origin of giant granules in the retinal pigment epithelium of the beige mouse was investigated with electron microscopy and ultrastructural histochemistry. These granules were found to contain melanin and acid phosphatase. Apparently they arise from fusions of primary lysosomes with melanin granules which are already enlarged from multiple fusions among melanosomes. Therefore, the giant gra...
متن کاملSignificance of pigment granules in the vitreous.
The presence of pigment granules in the anterior vitreous, in the absence of previous ocular surgery, is almost pathognomonic of a retinal break (Shafer, I 965). To investigate the accuracy of this observation, a consecutive series of patients with retinal holes were examined. Method All patients presenting to us over an i8-month period at Moorfields Eye Hospital with rhegmatogenous retinal det...
متن کاملLipofuscin (aging) Pigment Granules of the Newborn Human Liver
We have observed pigmented cytoplasmic granules, with the characteristic staining properties of lipofuscin (ceroid, "wear-and-tear") pigment, in newborn human liver. The pigment is found at the periphery of the lobule in hepatocytes and some bile ductular cells. It is acid-fast, PAS-positive after diastase digestion, slightly argyophilic and sudanophilic, and markedly Schmorl's- and peroxidase ...
متن کاملThe occurrence of actinlike filaments in association with migrating pigment granules in frog retinal pigment epithelium
In the retina of the frog and certain other animals, melanin pigment granules move in response to light so as to shield photoreceptor outer segments. The granules are contained within the cells of the pigment epithelium (PE) which lie as a continuous sheet between the neural retina and the choroid. Moderate illumination of the eye causes the melanin granules to move from a region within a PE ce...
متن کاملPhospholipase D1 localises to secretory granules and lysosomes and is plasma-membrane translocated on cellular stimulation
Phospholipase D (PLD) activity has been implicated in the regulation of membrane trafficking [1,2], superoxide generation and cytoskeletal remodelling [3,4]. Several PLD genes have now been identified and it is probable that different isoforms regulate distinct functions. Defining the subcellular localisation of each isoform would facilitate understanding of their roles. Previous PLD localisati...
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ژورنال
عنوان ژورنال: Archivum histologicum japonicum
سال: 1962
ISSN: 0004-0681
DOI: 10.1679/aohc1950.22.377